Y91 ICD-10-CA category: Evidence of alcohol involvement determined by level of intoxication
Y91 isn’t a code on its own. Choose one of the 5 codes beneath it, the one the documentation supports.
Official description
Y91Evidence of alcohol involvement determined by level of intoxication
ICD-10-CA · Canada
Codes in Y91
Y91 isn’t a code on its own. Open the code that matches what the note documents.
Notes for Y91
As CIHI prints them, with any note Y91 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Evidence of alcohol involvement determined by blood alcohol content (Y90.-)
Note
- These categories may be used, if desired, to provide supplementary information concerning causes of morbidity and mortality. They are not to be used for single-condition coding in morbidity or mortality.From Y90-Y98 Supplementary factors related to causes of morbidity and mortality classified elsewhere
- This chapter, which in previous revisions of ICD constituted a supplementary classification, permits the classification of environmental events and circumstances as the cause of injury, poisoning and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used in addition to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter XIX, Injury, poisoning and certain other consequences of external causes (S00-T98). Causes of death should preferably be tabulated according to both Chapter XIX and Chapter XX, but if only one code is tabulated then the code from Chapter XX should be used in preference. Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter XX should be used to provide additional information for multiple-condition analysis only.From Chapter 20: External causes of morbidity and mortality (V01-Y98)
Where Y91 sits
- 1ChapterChapter 20: External causes of morbidity and mortality (V01-Y98)
- 2Block Y90-Y98Supplementary factors related to causes of morbidity and mortality classified elsewhere
- 3Category Y91Evidence of alcohol involvement determined by level of intoxication
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
Is Y91 a valid ICD-10-CA code?
No. Y91 (Evidence of alcohol involvement determined by level of intoxication) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 5 codes; record the one the documentation supports.
Where is Y91 in ICD-10-CA?
Y91 sits under Y90-Y98 Supplementary factors related to causes of morbidity and mortality classified elsewhere, within Chapter 20: External causes of morbidity and mortality (V01-Y98).
What coding notes apply to Y91?
ICD-10-CA lists Excludes, Note notes for Y91, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.